How do you calculate cooling capacity of a heat exchanger?
Using the energy equation of Q = ṁ x Cp x ΔT we can calculate the cooling capacity. We add 273.15K to the celcius to convert it to units of Kelvin. The Specific heat capacity (Cp) is measured in units of kJ per kg per Kelvin. This gives us a final answer of Q = 2,500kW of cooling.
How do I choose a heat exchanger?
3 Tips for Choosing the Right Heat Exchanger
- Comprehensively analyze the application’s design. The first step to choosing the right heat exchanger for an application that’s already designed is to thoroughly analyze that design from multiple angles.
- Measure the advantages of ambient cooling.
- Consider consolidating thermal management needs.
What is the most effective heat exchanger?
Plate exchanger is the most efficient due to turbulent flow on both sides. High heat-transfer coefficient and high turbulence due to even flow distribution are important. However, a plate heat exchanger regenerator is restricted to low viscosities. With high viscosities, a special tubular may be required.
Which type of heat exchanger is best?
parallel-flow heat exchanger
What is the difference between double pipe and shell and tube heat exchanger?
A shell and tube heat exchanger is more efficient as it can have multiple passes for the fluid to stay longer in contact with heating material (fluid in this case). But it would cost higher to achieve same heat transfer rates on a double pipe heat exchanger than a shell and tube one.
What is the main disadvantage of double pipe heat exchanger over the shell & tube heat exchanger?
Disadvantages of Double Pipe Heat Exchangers It does not mean that they cannot be used in parallel flow. They have limitations in heat transfer rather than complicated designs and should be used in low heat duties. Leaking is more often in this type (paired with more units)
How can you increase the efficiency of a double pipe heat exchanger?
The findings suggested that air injection can be used as an active method of improving heat transfer in double pipe heat exchanger. An experimental investigation of the effect of fluid flow rate on the performance of a parallel flow extended plate heat exchanger was conducted.
What is the importance of baffles?
The main roles of a baffle in a shell and tube heat exchanger are to: Hold tubes in position (preventing sagging), both in production and operation. Prevent the effects of steam starvation, which is increased with both fluid velocity and the length of the exchanger. Direct shell-side fluid flow along tube field.
What is the purpose of baffles in a heat exchanger?
Baffles also serve as support s for the tubes during operation and help in preventing vibration from flow induced eddies. Although heat transfer is increased through the baffle arrangement, the pressure drop of the shell side fluid is also increased due to the decreased flow area, leakage and bypass effects.
What is baffle cut?
Baffle is provided with a cut (%) which is expressed as the percentage of the segment height to shell inside diameter. In general, baffle cut can vary between 15% and 45% of the shell inside diameter. This cut allows the fluid to pass through in parallel or counter flow direction.
How are baffle cuts calculated?
l c = baffle cut = distance from the baffle to the inside of the shell, mm or in. D o t l = outside diameter of the tube bundle, mm or in.
What is baffle spacing?
Baffles. Baffles are used to increase the fluid velocity by diverting the flow across the tube bundle to obtain higher transfer co-efficient. The distance between adjacent baffles is called baffle-spacing. The baffle spacing of 0.2 to 1 times of the inside shell diameter is commonly used.
What is a baffle window?
The Baffle Window System is the oldest configuration for bullet-resistant barriers and can be found in many financial institutions and governmental offices today. Utilizing staggered pieces of bullet-resistant glass, this system provides completely unobstructed views, combined with maximum voice transmission.
How does a baffle work?
How do Baffles Work? Baffles work by disrupting the flow pattern and providing top to bottom flow. By ensuring that top to bottom flow is achieved in addition to swirling flow, baffles are able to prevent this from happening.
What is a baffle in construction?
A sound baffle is a construction or device which reduces the strength (level) of airborne sound. Sound baffles are a fundamental tool of noise mitigation, the practice of minimizing noise pollution or reverberation.
What is baffle effect?
Baffle effect refers to the fact that sound waves impinging on a surface such as the head will be reflected. The incident and reflected waves may then combine near the side of the head to create a greater sound pressure than that without the head.
Is baffle box better?
Baffle boxes also have the upper hand in regard to the life of a comforter. The extra strip of fabric cuts down on wear and tear, which can enhance the comforter’s durability and longevity.
What is a baffle ceiling system?
Baffle ceilings are ideal for creating atmosphere within a room space. They are particularly suited for remedial installation on concrete ceilings where a distinctive design or improvement to the acoustic sound is required. A sound baffle is a construction or device that reduces the strength (level) of airborne sound.
What is an acoustical baffle?
Acoustic baffles are free hanging sound absorption products that are often used to acoustically treat large rooms such as gymnasiums and lobbies.
How much gap should be behind an acoustic panel?
The Acoustic Treatment Experts #2 you want 1/3 of the area untreated, 1/3 of the area at depth 1 and 1/3 of the area at depth 2. the larger the depth, the better, but that all takes away from the main space…all a compromise.